Ventilator



March 19, 1946. I c, N. ODAY VENTILAIOR Filed July 26, 1944 Patented Mar. 19, 1946 2,396,746 VENTILATOR Cortland N. ODay, Long Island City, N. Y., as-

Devices, Inc., New York, N.

Application July 26, 1944, Serial No. 546,615

signer to Air 1 Claim.

This invention relates to ventilators, and more particularly to stationary ventilators of the type adapted to utilize air currents or wind exterior of the building for exhausting the air from the interior.

The object of the invention is to provide an improved and simplified structure adapted to more eificiently utilize wind or air currents exterior of the building and lending itself to economy in material and labor and other advantage such as will hereinafter more particularly appear.

The invention consists in the novel construction, arrangement, and combinations of parts hereinafter more particularly described.

One sheet of drawings, largely diagrammatic, accompanies this specification as part thereof.

Figure 1 is a side elevation partly broken away on line 1-! of Figure 2.

Figure 2 is a horizontal cross-section.

Referring to the drawing:

The improved device comprises a ring-like base member I embracing and carried on a tubular exhaust pipe 4 which is preferably constructed with an annular flange 3 above the portion 2 of the pipe and being adapted to extend through the roof structure of the building to the interior thereof. A conical cover or top is provided with a flat annular portion 5, a central upwardly dished portion 6 and an outer downwardly turned flange l, the flat annular portion 5 of the cover corresponding in diameter and width with the dimensions of the ring base I and spaced coaxially thereabove.

Between the base i and the portion 5 of the top are positioned a plurality of vanes 8, l and I2, secured in position by angle plates 9 secured, respectively, to the sides of the vanes and the bottom and top portions 1 and 5. The vanes are all substantially identical in form but are arranged in three radially spaced groups, the arrangement and form of the vanes constituting the principal features of the present invention.

Each of the vanes 8, l0 and 12 are formed of substantially rectangular sheets of metal bent on vertical lines II on an obtuse angle so as to constitute angularly disposed wings. The vanes 8 constituting the innermost group are arranged with the vertical bend ll outwardly disposed, the vanes being spaced circumferentially to leave spaces l through which the air from the building can be exhausted upwardly through the pipe 2, 4 by the sucking action of the ventilator.

The medial group of vanes Ill are similarly arranged with the vertical bends H outwardly directed and similarly spaced, but so arranged as to mask the space l5 between adjacent wings of the inner group of vanes 8.

The vanes I2 of th outermost group are arranged with the vertical bends ll inwardly directed and these vanes are oppositely disposed to the vanes 8 of the innermost group so that the vertical bends ll of the inner and outer vanes 8 and I2 are in radial alignment. The inner and outer vanes 8 and l 2 defin Venturi-like passages into which the wings of adjacent vanes ll] of the medial group project slightly so as to permit air, being drawn upwardly by the ventilator through pip 2 from the building and outwardl through the passages IE, t proceed through the passages 16, defined by the adjacent portions of vanes of the inner 8 and medial It] group, into the outside wind stream of air passing through the Venturilike passages thereby producing a suction which induces an upward draft to exhaust stale air from the building through said pipe 2.

Where the vanes are formed from, relatively thin metal, their exposed edges can be finished by being turned back as at M, and other refinements in manufacture will readily suggest themselves to those skilled in the art, but are within the scope of the present invention as claimed,

Having thus fully described my invention, I claim:

A ventilator comprising a ring-like base member, a conical cover spaced coaxially thereabove, with a plurality of vertically positioned vanes secured to and between said ring-like member and conical cover, an exhaust pipe carried in the ring-like base member, each of said vanes being bent at an obtuse angle on a vertical medial line to form Wings, and said vanes arranged in three radially spaced concentric circular groups, the vanes in each group spaced apart circumferentially, and the three groups of spaced vane staggered circumferentially so that the wings of the medial group of vanes will extend between the adjacent wings of the outer and inner groups, the wings of the vanes in the inner and medial groups being substantially parallel, and the vanes in the outer group being bent in the opposite direction to that of the medial and inner groups.

CORTLAND N. ODAY. 

